INSECT ORDERS 



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4. Stink bugs. These are shield-shaped bugs that suck plant juices 

 and have a pronounced, unpleasant odor. They are often found on 

 berry vines and may leave their odor and taste on berries. 



5. Plant bugs. These bugs are somewhat elongated with antennae 

 about half as long as the body. The squash bug and chinch bug are 

 common examples. They do serious damage to plants. 



Order — Homoptera 



These insects have four membranous wings when they have wings, 

 but some have wingless generations. Metamorphosis is gradual, and 

 mouth parts are for sucking. The winged forms hold the wings sloping 

 down the sides of the body somewhat like the roof of a house when at 

 rest. 



Photo by Winchester 



Fig. 17.8. The cicada or locust. This is the insect that produces the lonesome singing 



from the trees in the late summer. 



1. Cicadas. The cicada, dog day harvest fly, or locust is the insect 

 that produces the loud singing noises that are so prevalent in the late 

 summer. They live about two years in the ground as nymphs, feeding 

 on plant roots. Then they crawl up on a tree trunk and go through 

 their final molt and emerge as adults. Another species spends seventeen 

 years in the ground and is called the seventeen-year locust. 



2. Plant hoppers. These are small hump-back insects that hop when 

 disturbed. They may be referred to as leaf hoppers, tree hoppers, or 

 frog hoppers. They do great damage to plants upon which they feed. 



3. Plant lice. These are the aphids that are used as cows by the ants. 

 Some generations are wingless. They live on the underneath side of 

 leaves and make up for their small size by their tremendous numbers 

 which do great damage to plants. Eggs hatch within the body of the 

 females and the young are born alive, with ten generations or more each 



